<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <script>
      //   var arr = [];
      //   for (var i = 0; i < 2; i++) {
      //     arr[i] = function () {
      //       console.log(i); //2
      //     };
      //   }
      //   arr[0]();
      //   arr[1]();

      let arr = [];
      for (let i = 0; i < 2; i++) {
        arr[i] = function () {
          console.log(i); //1
        };
      }
      arr[0]();
      arr[1]();
    </script>
  </head>
  <body></body>
</html>
